The model has 75 of 100 parts shaded to represent 0.75. A model divided into 100 parts. 75 are shaded gray.

Amena models the solution to 0.75 – 0.20 by shading in black each of the parts she is subtracting from 0.75. Which models the solution?

A model divided into 100 parts. 75 are shaded gray. 2 are shaded black.
A model divided into 100 parts. 75 are shaded gray. 20 are shaded black.
A model divided into 100 parts. 55 are shaded gray. 20 are shaded black.
A model divided into 100 parts. 73 are shaded gray. 2 are shaded black.